Associated Costs for bits needed in the house

Has anyone heard or seen anything about Solar Panels being fitted to our properties?

The reason for asking is that we have been reading the General Discussions side of this website under the thread 'Buying Properties' and found that a couple of people buying at Polaris World have suddenly noticed solar water heating panels appearing on the roof of their properties. This has come as a complete surprise to them as they had no knowledge of these being fitted.

However, according to the writers on that topic a new law came in to force on 28th September that requires all new builds to have these panels.

Question is how accurate is the information and are we going to get them? Has anyone who has visited recently seen any panels appearing or got any information on this?